Product details
| Part number | 4901-9820 |
|---|---|
| Description | Horn 24VDC Red Non-Addressable |
| Category | Notification Appliances / Conventional Horns, Strobes & Speakers |
| System | Simplex TrueAlarm detectors and TrueAlert appliances |
| Works with | Conventional reverse-polarity NACs (free-run mode), 4006 (SmartSync), 4007ES Hybrid (SmartSync), 4008 (SmartSync), 4010 (SmartSync), 4010ES (SmartSync), … |
| Approvals | UL listed to Standard 464; ULC listed to Standard S525; CSFM listed; FM approved; MEA (NYC) acceptance |
| Availability | In stock in Riyadh |
| Support | Selection, compatibility and programming help from our engineers |
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About the 4901-9820
Low-current 24 VDC electronic horn, non-addressable, with red housing and white FIRE lettering. A switch selects free-run mode, where the horn follows a conventional NAC (temporal, March Time or coded patterns), or SmartSync mode, where the horn is controlled separately from strobes on the same two-wire NAC. In SmartSync mode the horn can be silenced while the strobes keep flashing until reset.
The horn is NEMA 1 rated only when used with the 4905-9931 adapter plate and 2975-9145 back box.
Specifications
| Rated voltage range | 16 VDC to 33 VDC |
|---|---|
| Current | 21 mA at 16 VDC; 23 mA at 24 VDC; 27 mA at 33 VDC |
| Sound output at 10 ft (3 m), 24 VDC, UL 464 reverberant | 89 dBA steady; 85 dBA coded |
| Sound output at 10 ft (3 m), 24 VDC, anechoic | 96 dBA steady; 92 dBA coded |
| Sound characteristics | 2400 to 3700 Hz sweep, modulated at 120 Hz rate |
| Dimensions | 5-1/8" H x 5" W x 1-1/2" D (130 mm x 127 mm x 38 mm) |
| Temperature / humidity | 32° to 122° F (0° to 50° C); 10% to 93%, non-condensing @ 100° F (38° C) |
| Connections | Terminal blocks for 18 AWG to 12 AWG (0.82 mm² to 3.31 mm²); two wires per terminal for in/out wiring |
Used with
- 4905-9938 – SmartSync Control Module, Class A or Class B, installs in 4 in. square box
- 4905-9838 – Sound damper, reduces output 5 to 6 dBA (package of 20)
- 4905-9937 – Surface mount red adapter skirt for 1-1/2 in. deep surface mounted boxes
- 4905-9989 – White horn cover with red FIRE lettering
- 4905-9961 – Red wire guard with mounting plate
From Simplex datasheet S4901-0010. The datasheet, UL listing and installation manual can be downloaded under Documents above.